# Can I use a Japanese rice cooker abroad with a transformer? How do I choose one?

> Yes, if you choose the right transformer. As of October 2026, Japan-market rice cookers are rated 100V, so in 200–240V regions such as mainland China (220V) they need a step-down transformer: a coil-type unit with 100V output (not 110V), rated at least the cooker's wattage ÷ 0.8 (1,600W or more for a 1,210W cooker), ideally 2,000W or more with pure copper windings, with only one appliance per transformer. Electronic travel converters marked "for heating appliances only" will not do. A 2,000W transformer weighs about 8–10kg and costs a few hundred yuan in mainland China; manufacturers do not support use outside Japan, and there is no warranty. If you'd rather avoid the hassle, buy a 220V tourist (overseas) model.

- Page: https://bestjapanbuy.com/en/q/rice-cooker-transformer/
- Updated: 2026-10-24

## The short answer

Yes, if you choose the right transformer. Many people in mainland China buy Japan-market (100V) rice cookers and use them with a step-down transformer. A Japan-market cooker cannot be plugged straight into a 220V outlet; it will burn out.

If you'd rather avoid the hassle, buy a 220V tourist (overseas) model and use it with a plug adapter; see the [rice cooker buying guide](/en/q/rice-cooker-buying-guide/).

## How to choose the transformer

- **Coil-type step-down transformer**: 220V to 100V (in 230–240V regions, choose one for your input voltage). Electronic travel converters marked "for heating appliances only" cannot be used with electronic rice cookers that have an LCD.
- **100V output, not 110V**: the cooker is rated 100V. Some transformers have both 100V and 110V sockets; use the 100V one.
- **At least the cooker's wattage ÷ 0.8**, rounded up. 2,000W or more is recommended; if the margin is small, choose pure copper windings (less heat, longer life).
- **One appliance per transformer**: don't run a kettle or anything else from it at the same time.
- **Know what you're getting**: a 2,000W transformer weighs about 8–10kg and costs a few hundred yuan. People usually buy one online after getting home rather than carrying it from Japan.
- **No warranty**: manufacturers do not support use outside Japan, so you'll need to find your own repair options.

## Working out the wattage

Find the power consumption on the rating label or in the manual. "÷ 0.8, rounded up to the nearest hundred" gives the minimum; 2,000W or more is recommended in every case:

| Model | Cooker wattage | Minimum after ÷ 0.8 |
| --- | --- | --- |
| [Panasonic SR-N310D](/en/p/panasonic-sr-n310d/) | 1,120W | 1,400W |
| [Tiger JRI-T100](/en/p/tiger-jri-t100/) | 1,210W | 1,600W |
| [Zojirushi NW-YD10](/en/p/zojirushi-nw-yd10/) | 1,240W | 1,600W |
| [Toshiba RC-10HGX](/en/p/toshiba-rc-10hgx/) | 1,420W | 1,800W |

Transformer makers are more conservative: Kashimura's travel transformer notes say heating appliances and appliances with motors need a rated capacity of at least 3 times their power consumption, and that for continuous use over 30 minutes you should stay under 80% of the rated capacity. If unsure, go bigger.

## What users report

These are personal experiences, not manufacturer guidance:

- **Zojirushi NW-JS10 (1,240W) with a Shunhong 2,000W aluminium-wire transformer** (SMZDM, 2020): bought for 293 yuan on JD.com; "output power is enough so far, and it doesn't get very hot." The author suggests buying by actual wattage ÷ 0.8 rounded up, with one appliance per transformer; the pure copper version of the same rating costs twice as much but runs cooler and lasts longer.
- **Zojirushi NP-NY10 with a Delixi ZH-2000VA** (SMZDM, 2016): the transformer weighs 9.5kg net, and "after cooking a pot of rice neither the power cord nor the body was really hot." The author also admits 2,000VA is not enough by peak power, but a 3,000W unit was too expensive.
- **110V output trips** (SMZDM, 2017): a Zojirushi NP-YB10 on a 110V-output transformer "usually tripped after running for 20 minutes"; it worked normally after switching to a Delixi transformer with 100V output.
- **Plugged into 220V by mistake** (SMZDM, 2020): a relative plugged a Japanese rice cooker straight into 220V and it "blew with a bang"; the author replaced the varistor and it worked again.

## Tourist model or Japan-market model plus transformer?

| | 220V tourist (overseas) model | Japan-market (100V) model + step-down transformer |
| --- | --- | --- |
| Works as is? | Yes; mainland China needs a plug adapter (usually for the SE round-pin plug) | Needs a step-down transformer; the Japanese Type A plug fits Chinese two-pin outlets |
| Weight | Just the cooker (5.5-cup: about 4–6kg) | Plus a transformer of about 8–10kg (usually bought at home) |
| Extra cost | Plug adapter | A few hundred yuan for the transformer |
| Warranty | Some models come with a warranty card for China | None; manufacturers do not support use outside Japan |
| Choice of models | Fewer models; new features usually arrive later | Wide choice; almost anything on sale in Japanese stores |
| Control panel | Often Chinese or English | Japanese only |
| Price (5.5-cup pressure IH) | 8 models we track: JP¥49,800–86,800 | 11 models we track with prices: JP¥20,057–103,240 |

Prices are Japanese tax-inclusive prices we had recorded as of October 2026; see each product page for the latest. Japan-market models span a wider price range with more choice, at the cost of the transformer's weight, its price and no warranty. Tourist models are the low-hassle option.

## 110–120V regions (Taiwan, the US, Canada)

Most Japanese 100V rice cookers work in 110–120V regions. Some users report error codes when the local voltage runs high: a PTT appliance-board thread discusses post-2018 Zojirushi pressure IH cookers possibly showing an error code above about 113V, and one user said the cooker they bought on Amazon Japan "did throw error codes" and worked normally after adding a step-down transformer, while many others in the same thread used theirs without one. If you're worried, use a step-down transformer with 100V output.

## Other things to check

- **Frequency**: a transformer changes voltage, not frequency. Most Japan-market models we track are rated 50/60Hz; for models rated only 50Hz or 60Hz, see the frequency result on the product page and [Does 50Hz vs 60Hz matter?](/en/q/50hz-60hz/).
- **Rice cookers only**: for hair dryers, hair irons, toilet seats and other heating appliances we still recommend a model rated for your local voltage; see [Will Japanese appliances work in mainland China?](/en/q/japan-appliance-voltage-china/).
- **Flying**: rice cookers have no battery, so carry-on or checked baggage are both fine; see [checking appliances in baggage](/en/q/checked-baggage-appliance/).

For each model's result in mainland China, see [rice cookers in mainland China](/en/works-in/cn/rice-cooker/); all models are on the [rice cooker category page](/en/c/rice-cooker/).

## Frequently asked questions

### Should the transformer output 110V or 100V?

100V. Japan-market rice cookers are rated 100V. A user on SMZDM reported that with a 110V-output transformer the cooker ran over-voltage and usually tripped after about 20 minutes, and that it worked normally after switching to a 100V-output transformer. Many transformers have both 100V and 110V sockets; use the 100V one.

### Can I use a small travel converter?

No. Electronic travel converters are usually for heating appliances only: Yazawa's 1,000W travel converter listing says electronic rice cookers with an LCD cannot be used, and Kashimura's WT-73M travel transformer says appliances such as rice cookers that exceed its capacity cannot be used. Use a coil-type step-down transformer.

### How powerful should the transformer be?

At least the cooker's wattage ÷ 0.8, rounded up (1,240W ÷ 0.8 ≈ 1,550W, so choose 2,000W); 2,000W or more is recommended, with pure copper windings if the margin is small. The transformer maker Kashimura is more conservative for heating appliances: a rated capacity of at least 3 times the power consumption. Check the cooker's rating label or manual for its wattage.

### Is a Japan-market cooker covered by warranty if it breaks abroad?

Don't count on it. Japan-market models have no mainland China warranty, and Tiger says faults caused by using Japan-only products overseas are repaired for a fee even within the warranty period. Some 220V tourist models come with a warranty card for China; check before you buy.

### What if I plugged it straight into 220V by mistake?

Unplug it at once and do not power it again. One SMZDM user wrote that a relative plugged their Japanese rice cooker straight into 220V and it "blew with a bang"; the varistor had burnt out, and the cooker worked again after it was replaced. Repair shops quoted about 200–300 yuan. There are many sensors inside, so leave it to a repair shop unless you know electronics.


## Sources

- [SMZDM: Zojirushi NW-JS10 (Japan-market) with a Shunhong 2000W transformer, user review (2020-01-28)](https://post.smzdm.com/p/aekzwdm3/)
- [SMZDM: Zojirushi NP-NY10 with a Delixi ZH-2000VA transformer, unboxing (2016-10-28)](https://post.smzdm.com/p/502394/)
- [SMZDM: Zojirushi NP-YB10 bought on Amazon Japan, transformer experience (2017-07-24)](https://post.smzdm.com/p/583288/)
- [SMZDM: repairing a Japanese rice cooker plugged into 220V by mistake (2020-10-23)](https://post.smzdm.com/p/aqn2x5pp/)
- [PTT appliance board: buying a pressure IH rice cooker in Japan (2024-03-18)](https://www.ptt.cc/bbs/E-appliance/M.1710764436.A.F82.html)
- [K's Denki: Yazawa travel converter HTDC130240V1000W](https://www.ksdenki.com/shop/g/g4966307114436/)
- [Kashimura: travel voltage transformer WT-73M](https://www.kashimura.com/product/wt73m)
- [Tiger Corporation: repair service](https://www.tiger-corporation.com/ja/jpn/support/repair/)

> Data from BestJapanBuy (bestjapanbuy.com). Please credit and link to the page when using it. Prices are for reference only; check in store.
> Translated with AI; the Chinese version is authoritative.